Here are the links to the Columbian Exchange Flip Video. The total length is 26 minutes and the video is divided into Part 1 and 2. You must watch both parts. However after you take notes on the two slides at the beginning of part 1, all you need to do is watch the video and answer the 7 questions. It should not take more than 33 minutes total.
Part 1 Link
https://drive.google.com/file/d/0Bx56QOhaxUdDTWdUTVNPNWUwM1U/edit?usp=sharingColumbian Exchange Part 1
Part 2 Link
http://www.youtube.com/watch?v=KbtSYwcqoS4